JPS57166785A - Signal recorder and reproducer - Google Patents

Signal recorder and reproducer

Info

Publication number
JPS57166785A
JPS57166785A JP5108781A JP5108781A JPS57166785A JP S57166785 A JPS57166785 A JP S57166785A JP 5108781 A JP5108781 A JP 5108781A JP 5108781 A JP5108781 A JP 5108781A JP S57166785 A JPS57166785 A JP S57166785A
Authority
JP
Japan
Prior art keywords
coding
intraframe
code
frame
recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5108781A
Other languages
Japanese (ja)
Inventor
Hisaharu Takeuchi
Yutaka Miyaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5108781A priority Critical patent/JPS57166785A/en
Publication of JPS57166785A publication Critical patent/JPS57166785A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
    • H04N5/9261—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction
    • H04N5/9262—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation involving data reduction using predictive coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To reproduce a video signal of good quality with a small amount of tape consumption, by reducing the degree of dependance on the information between frames by comparing the coding system at the recording start moment and that at other time point. CONSTITUTION:An analog input signal 1 receives an A/D conversion 2 and a coding 3 to be recorded 4 on a recording medium 5. The signal 1 is then reproduced 8 through a recording medium 7 and decoded 9 to receive a D/A conversion 10. These operations are controlled by a controller 12, and an intraframe coder 21 is selected for the first frame at the starting moment of the recording. Then an interframe coder 20 is selected at and after the following frame. Thus the degree of dependance on the information between frames is reduced. In the reproduction mode, a code is added to a part of the recorded code to discriminate the intraframe coding or the inter-frame coding. This added code is reproduced. And based on the result of this reproduction, an intraframe decoder 31 or an interframe decoder 30 is selected.
JP5108781A 1981-04-07 1981-04-07 Signal recorder and reproducer Pending JPS57166785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5108781A JPS57166785A (en) 1981-04-07 1981-04-07 Signal recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5108781A JPS57166785A (en) 1981-04-07 1981-04-07 Signal recorder and reproducer

Publications (1)

Publication Number Publication Date
JPS57166785A true JPS57166785A (en) 1982-10-14

Family

ID=12877029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5108781A Pending JPS57166785A (en) 1981-04-07 1981-04-07 Signal recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS57166785A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61105985A (en) * 1984-10-30 1986-05-24 Matsushita Electric Ind Co Ltd Recording reproducing device
JPS62500417A (en) * 1984-10-10 1987-02-19 テレフンケン　フエルンゼ−　ウント　ルントフンク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング How to record and play back digital video signals
JPS6282886A (en) * 1985-10-08 1987-04-16 Matsushita Electric Ind Co Ltd Continuous still image recording device
JPS63310293A (en) * 1987-06-12 1988-12-19 Nec Corp Reproducing system for compressedly recorded picture
WO1989003159A2 (en) * 1987-10-05 1989-04-06 Intel Corporation Digital video compression system
JPH01278183A (en) * 1988-04-28 1989-11-08 Canon Inc Digital image recording and/or reproducing device
FR2638928A1 (en) * 1988-11-08 1990-05-11 Labo Electronique Physique Devices for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system
FR2644027A1 (en) * 1989-03-03 1990-09-07 Labo Electronique Physique Device for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system
JPH036187A (en) * 1989-06-01 1991-01-11 Mitsubishi Electric Corp Inter-frame encoding device
EP0524792A2 (en) * 1991-07-24 1993-01-27 Sony Corporation Decoding apparatus for a compressed digital video signal
JPH08204967A (en) * 1995-01-20 1996-08-09 Nec Corp Data coding device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500417A (en) * 1984-10-10 1987-02-19 テレフンケン　フエルンゼ−　ウント　ルントフンク　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング How to record and play back digital video signals
JPH0344714B2 (en) * 1984-10-30 1991-07-08 Matsushita Denki Sangyo Kk
JPS61105985A (en) * 1984-10-30 1986-05-24 Matsushita Electric Ind Co Ltd Recording reproducing device
JPS6282886A (en) * 1985-10-08 1987-04-16 Matsushita Electric Ind Co Ltd Continuous still image recording device
JPS63310293A (en) * 1987-06-12 1988-12-19 Nec Corp Reproducing system for compressedly recorded picture
JPH0628446B2 (en) * 1987-06-12 1994-04-13 日本電気株式会社 Compressed recorded image playback method
WO1989003159A2 (en) * 1987-10-05 1989-04-06 Intel Corporation Digital video compression system
JPH01278183A (en) * 1988-04-28 1989-11-08 Canon Inc Digital image recording and/or reproducing device
FR2638928A1 (en) * 1988-11-08 1990-05-11 Labo Electronique Physique Devices for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system
FR2644027A1 (en) * 1989-03-03 1990-09-07 Labo Electronique Physique Device for coding and decoding television pictures, television picture transmission system incorporating such devices, and transmission and reception stages of such a system
JPH036187A (en) * 1989-06-01 1991-01-11 Mitsubishi Electric Corp Inter-frame encoding device
EP0524792A2 (en) * 1991-07-24 1993-01-27 Sony Corporation Decoding apparatus for a compressed digital video signal
EP0524792A3 (en) * 1991-07-24 1994-01-05 Sony Corp
JPH08204967A (en) * 1995-01-20 1996-08-09 Nec Corp Data coding device

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